Originally Posted by RobertP

They are the same tune it's pretty clear when it says 380 hp 460 tq clearly stats on premium fuel and its the same power as the expedition on regular, I'm not gonna start arguing about a Mach 1 but I've got 2 terminators and the one is north of 800 rwhp, on stock motor but the the old computers don't have near the technology these ecoboost do, there is another engine God has numbers on like this the 6.2 f150 is 400 hp on regular and 412 on premium how can it magically do that on the same tune? I know how even my tuner who tuned my cobra said ford adjust the tuning by measuring the octane at the plug

Originally Posted by Dave Z

I have a 15 Eco Mustang, the recommended fuel, specified by the original equipment manufacturer, the people who designed and built it is 87, period. This is in the owners manual:


Note: Use of any fuel other than










recommended fuel can cause powertrain


damage, impair the emission control system


or cause loss of vehicle performance. Any


damage to vehicle that is caused by use of


fuel not recommended will not be covered


under warranty.

Originally Posted by Fasttimez

Most of our info is proprietary, but a couple pictures shouldn't hurt to prove my point. I know for a FACT that these Ecoboost engine's have the ability to adjust for different octane levels. They do come from the factory tuned to run "safe" on 87 octane....BUT....the control parameters do allow adjustment to optimize for running conditions, if the octane level is increased past 87, it will compensate & adjust timing (fuel & cam) to reach optimal running conditions until it peaks out within its set limits (low or high) as set by Ford from the factory. I've never said you'd make whopping amounts of extra power, it's only about a gain of 11-13 flywheel HP, which translates to about 1-2 HP at the wheels. But this guys argument is all about him saying the engine controls have no ability to compensate for higher octane fuel.....he's wrong PERIOD & needs to stick to pushrods & carburetors. He still hasn't answered the question of why Ford says running 87 octane in their 4 cylinder Mustang will result in a power loss of about 25HP vs using premium fuel. Maybe it comes from the factory spec'd to run on 93....but wait....according to that guy the vehicle can't compensate that much for changes in octane.....what a moron. When it comes to towing with the Ecoboost, Ford says to use premium fuel because "yes" loading of the engine creates more heat...."yes" higher octane resist detonation better....BUT....according to this guy, the engine came spec'd to run safely on 87 from Ford & can't adjust for different octane levels. Maybe Ford engineers are idiots & can't figure out how to make the Ecoboost tow safely on 87 octane....OR maybe, just maybe the engine CAN compensate for octane levels....I'm tired of arguing with ignorant people "ignorant means lack of knowledge".

Originally Posted by DallasTXF150

You completely lost me at 11-13 flywheel hp translated to 1-2 wheel hp. That's 82-90% parasitic loss. Means the whp of a stock F150 is like 38-69whp........